Pure Logic help

[steiner]

Having trouble with a Pure Logic controller on a fixed 8lb turbo 07 Apex. I have searched here and the interweb and I can not any manuals for it.
The sled idles fine and the AFR is 20. Off idle to 1/4 throttle the AFR is 11-12. Half throttle the AFR is 9-10. Full throttle or stabbing the throttle the sled stumbles and the AFR goes crazy. Had a hard time getting the sled to go over 90mph or hitting 10k rpm.
The last mile coming back from the 10 mile test drive the AFR showed E 2 and that was it.
Shut it down and the started the sled again and still showing E 2.
Not my sled and this is the first time working with a turbo sled and a fuel controller.
This was a fully functional sled about 5 years ago. For the past years it has been in a garage slowly being worked on and picked thru fixing many issues like cracked and broken headers, oil leaks, misplaced nuts and bolts, etc....... We finally have it to a point where it can actually fire up and run it without spewing oil out and not melting any plastics.

 

[mbarryracing]

For starters, an Apex wont idle at a super lean AFR of 20, that is in the realms of an ETEC... You should be seeing around 12-13 at idle, they run rich because of the high RPM cam timing overlap.
That is usually an indicator the sensor is either sensing oxygen from ambient air from an exhaust leak or sensor mounted too close to the exhaust outlet / picking up air from exhaust pulse reverberation, or your sensor is biting the radish...
Just from the fact your getting an E2 code says likely your sensor is junk.
Running leaded race fuel?
Try doing an open air calibration check.

Keep in mind that AFR's will jump all over the place from normal to super lean AFR's when there is a cylinder misfiring because the unburned oxygen getting passed thru from the intake out the exhaust...

 

[mbarryracing]

Im looking for some info on how Pure Logic controller works.

 

[mbarryracing]

http://www.ty4stroke.com/threads/pure-logic-fuel-controller.51518/

 

[steiner]

http://www.ty4stroke.com/threads/pure-logic-fuel-controller.51518/

Found that thread in my searches. I don't know anything about this controller and how to get into it to check or make adjustments.
Google has not found any manuals online either.

 

[steiner]

This sled had a large oil issue. The oil return line was pinched and pushed oil into the charge tube as well as into the exhaust.
I took out the sensor that is mounted in the rear pipe just before the muffler and cleaned it up with carb cleaner. It was working. Going thru it sweeps on start up and all that cool stuff.

 

[mbarryracing]

Can you post a picture of the Pure Logic controller?

 

[steiner]

Here you go

 

[mbarryracing]

The box has three interactive buttons that are used to enter the adjusting mode and change the on-board tuning features’ light settings. When power is applied to the unit (machine running) the adjusting mode may be accessed at any time by pressing the Mode button. The adjusting mode is distinguishable by at least one or more LEDs flashing. The current adjust mode is determined by the color of the flashing LED(s) and whether or not the 8th LED is blinking blue. The adjusting mode is exited by waiting several seconds without pressing any buttons. Upon exiting, the light setting is automatically saved for each individual mode.

The light settings in each mode are adjusted by pressing the (+) and (-) buttons located on the right and left side of the mode button, respectively. For easy reference, the LEDs are numbered 1 through 8. However, the LEDs can be adjusted to the following positions: 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8.
The first LED 1 on the far left set to 0.5 will be a fast blink, 1.0 will be a slow blink. For other halfs (1.5, 2.5, 3.5 etc) it will blink between the LEDs 1 & 2, 2 & 3, 3 & 4, etc...


Green Mode - Mode 1 - Cruise Mode
Mode adjusts how much fuel is added when the Green zone is engaged. Most applications correspond this mode to adjusting the cruise fuel. Setting this mode to a light setting of 0.5 typically sets the vehicle back to its stock fuel curve.

Yellow Mode - Mode 2 - Acceleration Mode
Mode adjusts how much fuel is added when the Yellow zone is engaged. Most applications correspond this mode to adjusting the acceleration fuel. Setting this mode to a light setting of 0.5 typically sets the vehicle back to its stock fuel curve.

Red Mode - Mode 3 - Full Throttle Mode
Mode adjusts how much fuel is added when the Red zone is engaged. Most applications correspond this mode to adjusting the full throttle fuel. Setting this mode to a light setting of 0.5 is normally developed to set the vehicle back to its stock fuel curve.

Green-Blue Mode - Mode 4
Mode is not always present in application and can be assigned to a number of different features. Instructions will have to be consulted to determine how this mode functions. Mode could be used to apply baseline pull fuel, adjust fueling based on pressure boost amounts, control NOS fuel, and a number of other features. Turbo applications is referred to as "Boost Fuel".

Yellow-BlueMode - Mode 5
Mode typically controls how fast / rate the yellow fueling zone comes in.

Red-Blue Mode - Mode 6
Mode typically controls how fast / rate the red fueling zone or top end fuel comes in.

 

[mbarryracing]

Control box has 6 modes with different colors lights for each function.

1- green low end cruise circuit

2- Yellow Accelerator Pump

3- Red Main jet

4- Green/Blue Boost Fuel + or – when on boost

5- Yellow/Blue Lower switch point of Yellow Accelerator circuit

6- Red/Blue Lower switch point of Main jet - means lowering rpm at which red comes on.

 

[mbarryracing]

How to do a open air sweep test on an wideband AFR oxygen sensor. If it responds slowly or erratically, indicator the sensor crapped out.

 

[steiner]

Any idea what E 2 means? I assume its somekind of troublecode

 

[mbarryracing]

I'd guess it's that the sensor is out of range, maybe heater is failing internally, etc.

 

[BOUNTYHUNTER]

Exactly...It just means that you're out of the operating range of the sensor. It will happen at idle when the a/f tries to go beyond 20, and same if you are too rich on the other end. Although we did see 40 to 50's when we had a pinched hose and is currently idling purrrrfectly at 20 on the afr.....so it might be out to lunch on those readings as the sensor needs to be tested asap to really know what we got.

that is a CPR controller...you can't set it up like an off the shelf controller - Jeff had his configured differently. Jim Manning had a conversation with him in the forum several years ago about this. they both posted some baseline settings that should us a good starting point

Should reset the next time we start it


The attitude box works like this:

1 - pilot
2 - needle
3 - main
4 - Boost fuel
5 - boost fuel switch point (switch point for when boost fuel addition engages).
6 - Full throttle RPM switch point (switch point for when full throttle fuel addition engages).

Jeff Simons CPR Box is different from all others,
2nd circuit is amount of accelerator fuel added
5th circuit is sensitivity of when it adds accellerator fuel
6th circuit is when green circuit (mode1) switches to red curcuit (mode3) based on load.

you will only trigger yellow circuit (mode2) when load is rapidly increased, it is only on for less than 1 second to give fuel to eliminate bog for transition from cruise (green mode 1 ) circuit to high load (red mode 3 circuit) by controlling sensitivity and amount of fuel on accellerator circuit, you get the best of both worlds, throttlle response and fuel mileage, CPR controller is the only one that has this feature.

 

[maxdlx]